Metal working hammer



Feb. 10, 1953 H. PHIILLIPS'ETAL 2,627,771

METAL WORKING HAMMER Filed Jan. 7, 1949 17 .flPinzzi s 65. G. Jones INVENTORS ATTORNEYS Faienied Feb. 10, 1953 METAL WORKING HAMMER Lawson H. Phillips and George C. Jones, Jackson, Tenn.

Application January 7, 1949, Serial No. 69,736

1 Claim. 1

This invention relates to a motor vehicle body repairmans hammer, used in reshaping dented bodies or fenders which have been damaged and distorted, as the result of accidents and collisions.

The primary object of the invention is to provide a hammer of this character which will operate to shrink the metal at the dented portion, and which has been stretched as a result of the impact of the accident, thereby improving the repair job.

Another object of the invention is to provide a metal working hammer for the purpose described, wherein the ends thereof are convex, with one end provided with a plunger that is projected beyond the end of the hammer for contact with the metal at the dented portion being repaired, with the convex surface of the end engaging the edge of the dented portion causing the metal to flatten and shrink, the metal returning to its natural state.

With the foregoing and other objects in view which will appear as the description proceeds, the invention consists of certain novel details of construction and combinations of parts, hereinafter more fully described and pointed out in the claim, it being understood that changes may be made in the construction and arrangement of parts without departing from the spirit of the invention as claimed.

Referring to the drawing Figure 1 is an elevational view of a metal working hammer constructed in accordance with the invention, one end of the hammer head being shown in section, illustrating the plunger thereof.

Figure 2 is an end elevational view of the plunger end of the hammer head.

Referring to the drawing in detail, the reference character 5 indicates the metal working hammer head which is secured on one end of the handle 6, the head 5 being of the double ended type with the extreme ends thereof convex as at a.

One end of the hammer head is formed with the bore 8 that extends inwardly from the outer surface thereof, which bore is designed to accommodate the weighted plunger 9 which is fitted therein in such a way that it may move freely as the hammer is moved into contact with the metal being straightened, with each impact of the hammer against the metal.

The plunger 9 is formed with an elongated opening in in which the pin H is disposed, the pin ll extending across the bore 8, securing the plunger in position within the bore.

When using the hammer in straightening a bent portion of a fender or body, the usual dolly is positioned under the metal and the hammer is used to strike the outer surface of the metal being straightened, the curved end of the hammer head striking the dented portion along the edge thereof where the dented portion merges into the main portion of the fender. It will be obvious that as the hammer strikes the metal, the plunger will be projected by the force of the blow, the plunger striking the dented portion forcing it against the dolly to the end that the dented portion of the metal shrinks and is pressed back to its natural shape.

Having thus described the invention what is claimed:

A metal working hammer comprising a hammer head having a bore extending inwardly from the striking face thereof said bore having a closed inner end, a weighted plunger of lesser length than the length of said bore mounted for free sliding movement within the bore, the outer end of said plunger being of a diameter substantially less than the diameter of the striking face of the hammer head and adapted to slide out beyond the striking face of the head, bending the metal against which the hammer is struck, subsequent to the contact of the head with the metal at a point directly opposite to the bore of the hammer head, and means to limit the outward sliding of said plunger.

LAWSON H. PHILLIPS. GEORGE C. JONES.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,319,478 Rybak May 18, 1943 2,515,431 Ulfves July 18, 1950 FOREIGN PATENTS Number Country Date 59,996 Norway Oct. 24, 1938 

